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            <h1 style="display: none">QFNUCTF-wp</h1>
            
              <p class="note note-info">
                
                  本文最后更新于：1 年前
                
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            <div class="markdown-body">
              <h2 id="Misc"><a href="#Misc" class="headerlink" title="Misc"></a>Misc</h2><h3 id="1-二维码"><a href="#1-二维码" class="headerlink" title="1. 二维码"></a>1. 二维码</h3><ul>
<li><p>扫码后<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-02-36.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_12-02-36"></p>
</li>
<li><p>使用010 Editor打开，16进制结尾有<code>PK</code>，更改图片拓展名为.zip</p>
</li>
</ul>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-07-35.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_12-07-35"></p>
<ul>
<li>使用字典4位数字破解（Ziperello）得密码，打开后得到flag</li>
</ul>
<h3 id="2-基础破解"><a href="#2-基础破解" class="headerlink" title="2.基础破解"></a>2.基础破解</h3><hr>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-14-40.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-14-40" style="zoom: 50%;" />

<ul>
<li>根据题目提示，密码为4位数字，同样跑字典（AccentRPR）解压得到</li>
</ul>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-22-21.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-22-21" style="zoom:50%;" />

<ul>
<li><p>Base64解码得到flag</p>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-23-19.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-23-19" style="zoom:50%;" /></li>
</ul>
<h3 id="3-大白"><a href="#3-大白" class="headerlink" title="3.大白"></a>3.大白</h3><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-28-00.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-28-00" style="zoom:50%;" />

<ul>
<li>题目中图片宽度被修改，使用010 Editor修改宽度保存后图片显示flag</li>
</ul>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-30-30.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_12-30-30"></p>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-30-56.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-30-56" style="zoom:50%;" />

<ul>
<li>flag需要手动输入，其中第四个字母为大写i</li>
</ul>
<h3 id="4-N种方法解决"><a href="#4-N种方法解决" class="headerlink" title="4.N种方法解决"></a>4.N种方法解决</h3><ul>
<li>题目为一个exe文件且无法打开，使用dbg打开发现为无效的PE文件</li>
</ul>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-39-47.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_12-39-47"></p>
<ul>
<li>010 Edr打开为一个图片转换的Base64编码</li>
</ul>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-40-58.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_12-40-58"></p>
<p>还原后得到一个二维码，扫码即得flag</p>
<h3 id="5-爱因斯坦"><a href="#5-爱因斯坦" class="headerlink" title="5.爱因斯坦"></a>5.爱因斯坦</h3><hr>
<ul>
<li>浏览图片首先查看属性，得到一个看似没用的备注</li>
</ul>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-45-04.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-45-04" style="zoom: 67%;" />

<ul>
<li>使用010 Edr打开结尾同样含<code>PK</code>，同上面的操作但此加密文件密码无任何提示，实际上就是属性中的备注，容易被忽略，暴力破解的话也很费时，切不可相信表面。</li>
<li>打开后得到flag</li>
</ul>
<h3 id="6-神秘龙卷风"><a href="#6-神秘龙卷风" class="headerlink" title="6.神秘龙卷风"></a>6.神秘龙卷风</h3><hr>
<ul>
<li>根据题目提示破解得到一串“外星人代码”</li>
</ul>
<img src="https://img.mkerosene.cn/Snipaste_2021-03-14_12-55-29.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_12-55-29" style="zoom:50%;" />

<ul>
<li><p>实际上为Brainfuck编码[在线转][<a target="_blank" rel="noopener" href="https://www.splitbrain.org/services/ook]%EF%BC%88%E5%8C%85%E6%8B%ACOkk.%EF%BC%89">https://www.splitbrain.org/services/ook]（包括Okk.）</a></p>
</li>
<li><p>解码后得到flag</p>
</li>
</ul>
<h3 id="7-wireshark"><a href="#7-wireshark" class="headerlink" title="7.wireshark"></a>7.wireshark</h3><hr>
<ul>
<li>使用wireshark打开pcap文件</li>
<li>找到post包，管理员登录密码为flag                      #知识欠缺</li>
</ul>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_13-07-33.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="Snipaste_2021-03-14_13-07-33"></p>
<h2 id="Reverse"><a href="#Reverse" class="headerlink" title="Reverse"></a>Reverse</h2><h3 id="1-easy-re-amp-2-内涵软件"><a href="#1-easy-re-amp-2-内涵软件" class="headerlink" title="1.easy re &amp; 2.内涵软件"></a>1.easy re &amp; 2.内涵软件</h3><hr>
<p><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_13-13-59.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_13-13-59" style="zoom:50%;" /><img src="https://img.mkerosene.cn/Snipaste_2021-03-14_13-15-40.png" srcset="https://img.mkerosene.cn/loading.gif" lazyload alt="./QFNUCTF-wp/Snipaste_2021-03-14_13-15-40" style="zoom:50%;" /></p>
<ul>
<li>使用IDA直接打开，根据flag标识寻找</li>
</ul>

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